Question

A jar of peanuts is supposed to have12

ounces of peanuts. The filling machine inevitably experiences fluctuations in the filling, so a quality-control manager randomly samples 12 jars of peanuts from the storage facility and measures their contents. She obtains the accompanying data.

11.95,11.72,12.21,11.32,11.86,11.84,11.48,12.14,11.75,11.51,12.25,12.56

Is data normally distributed? What is the sample standard deviation?

Answer #1

A jar of peanuts is supposed to have 16 ounces of peanuts. The
filling machine inevitably experiences fluctuations in filling, so
a quality-control manager randomly samples 12 jars of peanuts from
the storage facility and measures their contents. She obtains the
accompanying data. Complete parts (a) through (d) below.
Jar values
15.93
15.73
16.19
15.36
15.82
15.84
15.56
16.15
15.79
15.42
16.28
16.51
(b) Determine the sample standard deviation.
s=?
(Round to three decimal places as needed.)
(c) Construct a...

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A can of soda is labeled as containing 13 fluid ounces. The
quality control manager wants to verify that the filling machine is
not over dash fillingnot over-filling
the cans. Complete parts (a) through (d) below.
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b) The quality control manager obtains a sample of 75 cans and
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A quality-control engineer wants to find out whether or not a
new machine that fills bottles with liquid has less variability
than the machine currently in use. The engineer calibrates each
machine to fill bottles with 16 ounces of a liquid. After running
each machine for 5 hours, she randomly selects 15 filled bottles
from each machine and measures their contents. She obtains the
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Old Machine
New Machine
16.01
16.02
16.04
15.96
15.96
16.05
16
15.95
16.07
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A coffee machine is supposed to dispense 12 ounces of coffee in
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The graph below shows...

A quality-control engineer wants to find out whether or not a
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than the machine currently in use. The engineer calibrates each
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Old Machine
16.01
16
16.04
16.1
15.92
16.04
16.07
16.05
16.01
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15.96
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Problem 2) A coffee machine dispenses coffee into paper cups.
You’re supposed to get 10 ounces of coffee, but the amount varies
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